Controlling the optical properties of boron subphthalocyanines and their analogues,Molecular Systems Design & Engineering

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Controlling the optical properties of boron subphthalocyanines and their analogues
Molecular Systems Design & Engineering ( IF 3.2 ) Pub Date : 2020-11-17 , DOI: 10.1039/d0me00150c
Mathias Dowds _{1,

2,

3,

4} , Mogens Brøndsted Nielsen _{1,

2,

3,

4}

Affiliation

Boron subphthalocyanines (SubPcs) are cone shaped π-conjugated molecules comprised of three azomethine-bridged isoindole units and a central boron atom with an axial substituent. These molecules are particularly interesting for their optical properties offering potential applications for organic photovoltaics, organic light-emitting diodes, photodynamic therapy, and fluorescence imaging. In this review, we summarize how absorption and fluorescence properties can be finely tuned by substituent groups at either the periphery of the SubPc or at the axial position at the central boron atom. By suitable functionalization, fluorescence can for example be controlled by acid/base stimuli or by light/heat stimuli causing isomerization of an appended photo/thermoswitch. Moreover, optical properties can be tuned by contraction or expansion of the π-conjugated core. Key synthetic protocols for functionalization at peripheral and axial positions are also covered.

中文翻译：

控制硼亚酞菁硼及其类似物的光学性质

硼亚酞菁硼（SubPcs）是由三个偶氮甲碱桥接的异吲哚单元和一个带有轴向取代基的中心硼原子组成的锥形π共轭分子。这些分子的光学特性特别有趣，可为有机光伏，有机发光二极管，光动力疗法和荧光成像提供潜在的应用。在这篇综述中，我们总结了如何通过SubPc外围或中心硼原子轴向位置的取代基对吸收和荧光性质进行微调。通过合适的官能化，例如可以通过酸/碱刺激或通过光/热刺激来控制荧光，引起附加的光/热开关的异构化。此外，光学性质可以通过π共轭核的收缩或扩展来调节。还涵盖了在外围和轴向位置进行功能化的关键合成方案。

更新日期：2020-12-10

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